Correlated Quantum Tunneling of Monopoles in Spin Ice.

  title={Correlated Quantum Tunneling of Monopoles in Spin Ice.},
  author={Bruno Tomasello and Claudio Castelnovo and Roderich Moessner and Jorge Quintanilla},
  journal={Physical review letters},
  volume={123 6},
The spin ice materials Ho_{2}Ti_{2}O_{7} and Dy_{2}Ti_{2}O_{7} are by now perhaps the best-studied classical frustrated magnets. A crucial step towards the understanding of their low temperature behavior-both regarding their unusual dynamical properties and the possibility of observing their quantum coherent time evolution-is a quantitative understanding of the spin-flip processes which underpin the hopping of magnetic monopoles. We attack this problem in the framework of a quantum treatment of… 

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